diff --git a/pubspec.yaml b/pubspec.yaml
index 1b3fb5c..e5b13cc 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,8 @@
 name: matcher
-version: 0.12.1-dev
+
+# This version should really be 0.12.1-dev, but test depends on matcher <0.12.1,
+# so we're using + instead.
+version: 0.12.0+dev
 author: Dart Team <misc@dartlang.org>
 description: Support for specifying test expectations
 homepage: https://github.com/dart-lang/matcher